/// Copyright 2016 Kopano b.v.
/// 
/// This program is free software: you can redistribute it and/or modify
/// it under the terms of the GNU Affero General Public License, version 3,
/// as published by the Free Software Foundation.
/// 
/// This program is distributed in the hope that it will be useful,
/// but WITHOUT ANY WARRANTY; without even the implied warranty of
/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
/// GNU Affero General Public License for more details.
/// 
/// You should have received a copy of the GNU Affero General Public License
/// along with this program.If not, see<http://www.gnu.org/licenses/>.
/// 
/// Consult LICENSE file for details

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace Acacia.Native
{
    public static class User32
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int RegisterClipboardFormat(string format);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr SetParent(IntPtr window, IntPtr parent);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetParent(IntPtr window);

        public static int WS_CHILD = 0x40000000;

        public enum GWL : int
        {
            MSGRESULT = 0,
            STYLE = -16
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int SetWindowLong(IntPtr hWnd, GWL gwl, int value);

        [DllImport("user32.dll")]
        public static extern int GetWindowLong(IntPtr hWnd, GWL gwl);

        #region Messages

        [DllImport("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int wMsg, IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll")]
        public static extern int PostMessage(IntPtr hWnd, int wMsg, IntPtr wParam, IntPtr lParam);

        #endregion

        #region DCs

        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowDC(IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

        #endregion

        #region RedrawWindow

        [Flags()]
        public enum RedrawWindowFlags : uint
        {
            Invalidate = 0X1,
            InternalPaint = 0X2,
            Erase = 0X4,
            Validate = 0X8,
            NoInternalPaint = 0X10,
            NoErase = 0X20,
            NoChildren = 0X40,
            AllChildren = 0X80,
            UpdateNow = 0X100,
            EraseNow = 0X200,
            Frame = 0X400,
            NoFrame = 0X800
        }

        [DllImport("user32.dll")]
        public static extern bool RedrawWindow(IntPtr hWnd, IntPtr lprcUpdate, IntPtr hrgnUpdate, RedrawWindowFlags flags);

        #endregion

        #region System metrics

        public enum SystemMetric : int
        {
            CXSCREEN = 0,
            CYSCREEN = 1,
            CXVSCROLL = 2,
            CYHSCROLL = 3,
            CYCAPTION = 4,
            CXBORDER = 5,
            CYBORDER = 6,
            CXDLGFRAME = 7,
            CYDLGFRAME = 8,
            CYVTHUMB = 9,
            CXHTHUMB = 10,
            CXICON = 11,
            CYICON = 12,
            CXCURSOR = 13,
            CYCURSOR = 14,
            CYMENU = 15,
            CXFULLSCREEN = 16,
            CYFULLSCREEN = 17,
            CYKANJIWINDOW = 18,
            MOUSEPRESENT = 19,
            CYVSCROLL = 20,
            CXHSCROLL = 21,
            DEBUG = 22,
            SWAPBUTTON = 23,
            RESERVED1 = 24,
            RESERVED2 = 25,
            RESERVED3 = 26,
            RESERVED4 = 27,
            CXMIN = 28,
            CYMIN = 29,
            CXSIZE = 30,
            CYSIZE = 31,
            CXFRAME = 32,
            CYFRAME = 33,
            CXMINTRACK = 34,
            CYMINTRACK = 35,
            CXDOUBLECLK = 36,
            CYDOUBLECLK = 37,
            CXICONSPACING = 38,
            CYICONSPACING = 39,
            MENUDROPALIGNMENT = 40,
            PENWINDOWS = 41,
            DBCSENABLED = 42,
            CMOUSEBUTTONS = 43,
            CXFIXEDFRAME = CXDLGFRAME,  /* ;win40 name change */
            CYFIXEDFRAME = CYDLGFRAME,  /* ;win40 name change */
            CXSIZEFRAME = CXFRAME,    /* ;win40 name change */
            CYSIZEFRAME = CYFRAME,     /* ;win40 name change */
            SECURE = 44,
            CXEDGE = 45,
            CYEDGE = 46,
            CXMINSPACING = 47,
            CYMINSPACING = 48,
            CXSMICON = 49,
            CYSMICON = 50,
            CYSMCAPTION = 51,
            CXSMSIZE = 52,
            CYSMSIZE = 53,
            CXMENUSIZE = 54,
            CYMENUSIZE = 55,
            ARRANGE = 56,
            CXMINIMIZED = 57,
            CYMINIMIZED = 58,
            CXMAXTRACK = 59,
            CYMAXTRACK = 60,
            CXMAXIMIZED = 61,
            CYMAXIMIZED = 62,
            NETWORK = 63,
            CLEANBOOT = 67,
            CXDRAG = 68,
            CYDRAG = 69,
            SHOWSOUNDS = 70,
            CXMENUCHECK = 71,  /* Use instead of GetMenuCheckMarkDimensions()! */
            CYMENUCHECK = 72,
            SLOWMACHINE = 73,
            MIDEASTENABLED = 74,
            MOUSEWHEELPRESENT = 75,
            XVIRTUALSCREEN = 76,
            YVIRTUALSCREEN = 77,
            CXVIRTUALSCREEN = 78,
            CYVIRTUALSCREEN = 79,
            CMONITORS = 80,
            SAMEDISPLAYFORMAT = 81,
            IMMENABLED = 82,
            CXFOCUSBORDER = 83,
            CYFOCUSBORDER = 84,
            TABLETPC = 86,
            MEDIACENTER = 87,
            STARTER = 88,
            SERVERR2 = 89,
            MOUSEHORIZONTALWHEELPRESENT = 91,
            CXPADDEDBORDER = 92,
            DIGITIZER = 94,
            MAXIMUMTOUCHES = 95,
            REMOTESESSION = 0x1000,
            SHUTTINGDOWN = 0x2000,
            REMOTECONTROL = 0x2001,
            CARETBLINKINGENABLED = 0x2002,
            CONVERTIBLESLATEMODE = 0x2003,
            SYSTEMDOCKED = 0x2004,
        }

        [DllImport("user32.dll")]
        public static extern int GetSystemMetrics(SystemMetric nIndex);

        #endregion
    }
}